The document discusses strategies for building energy efficient homes, including achieving a HERS score of 86 or better, being 30% more efficient than the model energy code, and prioritizing affordability, durability and health. Key systems that impact energy performance are identified as the building envelope, HVAC equipment, domestic hot water and appliances. Specific efficient building practices highlighted include advanced framing, buried duct insulation, unvented crawlspaces, low-e windows and optimized "right-sized" HVAC designs.

1. Steven Winter Associates, Inc.
HUD Energy Action Plan
Building Energy Efficient Homes:Building Energy Efficient Homes:
New Construction and RehabNew Construction and Rehab
HERS 86 (EnergyStar) minimumHERS 86 (EnergyStar) minimum
30% Better Than the M.E.C.30% Better Than the M.E.C.
Other Considerations:Other Considerations:
Affordable; Durable; HealthyAffordable; Durable; Healthy
William Zoeller, R.A.

2. Steven Winter Associates, Inc.
HUD Energy Action Plan
Major Systems Affecting BuildingMajor Systems Affecting Building
Energy PerformanceEnergy Performance
 Building EnvelopeBuilding Envelope
 Air-tightness, Insulation levelsAir-tightness, Insulation levels
 Water-managementWater-management
 Windows and Glazing SystemsWindows and Glazing Systems
 Glazing SHGCGlazing SHGC
 Overall “U” ValueOverall “U” Value
 Heating, Ventilation, and Air ConditioningHeating, Ventilation, and Air Conditioning
 Equipment sizing, efficiency and locationEquipment sizing, efficiency and location
 Duct tightness, distribution effectiveness,Duct tightness, distribution effectiveness,
and locationand location

3. Steven Winter Associates, Inc.
HUD Energy Action Plan
Major Systems Affecting BuildingMajor Systems Affecting Building
Energy PerformanceEnergy Performance
 Domestic Hot WaterDomestic Hot Water
 GenerationGeneration
 DistributionDistribution
 Stand-by-lossesStand-by-losses
 AppliancesAppliances
 Refrigerator, dishwasher, clothesRefrigerator, dishwasher, clothes
washer/dryerwasher/dryer
 Lighting and miscellaneousLighting and miscellaneous

4. Steven Winter Associates, Inc.
HUD Energy Action Plan
Panelized Advanced FramingPanelized Advanced Framing
 Panelized AdvancedPanelized Advanced
Framing 2 x 6 Walls @24”Framing 2 x 6 Walls @24”
OCOC
 Low-e WindowsLow-e Windows
 Foamed Stud Cavities withFoamed Stud Cavities with
Blown in Cellulose (R-23)Blown in Cellulose (R-23)
 Inside-The Envelope AHUInside-The Envelope AHU
 Foamed and InsulationFoamed and Insulation
Buried DuctsBuried Ducts
 Affordable and StarterAffordable and Starter
HomesHomes
 HERS 89HERS 89
Outlook ConstructionOutlook Construction
Atlanta, GAAtlanta, GA

5. Steven Winter Associates, Inc.
HUD Energy Action Plan
 Panelized Advanced FramingPanelized Advanced Framing
 Reduces Framing Cost and increasesReduces Framing Cost and increases
Level of insulationLevel of insulation
 Reduces on-Site Labor and ConstructionReduces on-Site Labor and Construction
TimeTime
 Requires Additional Planning, ButRequires Additional Planning, But
Improves Systems IntegrationImproves Systems Integration

6. Steven Winter Associates, Inc.
HUD Energy Action Plan
Insulation-Buried DuctsInsulation-Buried Ducts
Computer Modeling of Heat Flow
From Insulation Buried Duct
Section Through Foamed Over
Insulation Buried Duct
All ducts fully buriedAll ducts fully buried
with several incheswith several inches
of insulationof insulation
Larger trunks barelyLarger trunks barely
buried and smallerburied and smaller
branches fullybranches fully
buriedburied
Larger trunksLarger trunks
partially buriedpartially buried
R-30R-30 R-15R-15 R-10R-10

7. Steven Winter Associates, Inc.
HUD Energy Action Plan
 Buried Duct BenefitsBuried Duct Benefits
 Improves air distributionImproves air distribution
efficiencyefficiency
 Provides additional air-Provides additional air-
sealing at joints andsealing at joints and
registersregisters
 Reduces Peak load allowingReduces Peak load allowing
a smaller system to be useda smaller system to be used
 Cost of foam can be offsetCost of foam can be offset
by reduced cost of HVACby reduced cost of HVAC

8. Steven Winter Associates, Inc.
HUD Energy Action Plan
PANELIZED WALL ANDPANELIZED WALL AND
ROOF SYSTEMSROOF SYSTEMS
 25 Home In-fill Development25 Home In-fill Development
 Panelized SIP ConstructionPanelized SIP Construction
 R-24 WallsR-24 Walls
 R-40 RoofsR-40 Roofs
 92 AFUE Furnaces92 AFUE Furnaces
 Mastic Sealed DuctsMastic Sealed Ducts
 1.2-kW PV Solar Systems1.2-kW PV Solar Systems
 Low-e WindowsLow-e Windows
 EnergyStar AppliancesEnergyStar Appliances
 Compact Fluorescent LightingCompact Fluorescent Lighting
 Controlled VentilationControlled Ventilation
Claretian AssociatesClaretian Associates
South Chicago, IlSouth Chicago, Il

9. Steven Winter Associates, Inc.
HUD Energy Action Plan
 First SIP Project in ChicagoFirst SIP Project in Chicago
 $155,000 cost for 1700 SF Home$155,000 cost for 1700 SF Home
 5% Increase in Cost of Standard5% Increase in Cost of Standard
ConstructionConstruction
 50% Increase in Energy50% Increase in Energy
EfficiencyEfficiency

10. Steven Winter Associates, Inc.
HUD Energy Action Plan
Panelized Wall and Roof SystemsPanelized Wall and Roof Systems
 Cement Board Structural-Insulated-Panels
 Aluminum-Skinned SIP Roof Construction
 Structural-Steel Moment-Frame at Centerline
 Sold as Pre-Engineered Kit to Builder
 Standard and Custom Designs Available
 Low-Cost and Durable
Homefront Homes

11. Steven Winter Associates, Inc.
HUD Energy Action Plan
Cement Board SIP PanelsCement Board SIP Panels
• Hardie® 5
/16” thick cement board laminated to both sides
of 4” thick polystyrene foam
• Cuts construction time by up to 75%
• High minimum R values with R-20 walls and R-30 roof
• No wood used in the home construction to avoid moisture
and termite damage
Panelized Wall Construction System:
3 days to complete the building shell

12. Steven Winter Associates, Inc.
HUD Energy Action Plan
Home FrontHome Front
Home Front homes proved exceptionally
resilient when Hurricane Charley struck in
August, 2004
Before Hurricane
One mile away….
After Hurricane

13. Steven Winter Associates, Inc.
HUD Energy Action Plan
Unvented CrawlspaceUnvented Crawlspace
 Improved Energy EfficiencyImproved Energy Efficiency
 Improved Indoor-Air-QualityImproved Indoor-Air-Quality

14. Steven Winter Associates, Inc.
HUD Energy Action Plan
Low-e Glass WindowsLow-e Glass Windows
 Low-e glass blocks outLow-e glass blocks out
most long-wave radiationmost long-wave radiation
(heat) while allowing most(heat) while allowing most
of the short-wave radiationof the short-wave radiation
(light) to enter.(light) to enter.

15. Steven Winter Associates, Inc.
HUD Energy Action Plan
Typical CostsTypical Costs
 Extra cost for 300 SF low-e coatingExtra cost for 300 SF low-e coating
on double glazing: $300.on double glazing: $300.
 Savings in downsizing AC by ½ ton:Savings in downsizing AC by ½ ton:
$275.$275.
 Net cost: $25.Net cost: $25.

16. Steven Winter Associates, Inc.
HUD Energy Action Plan
Additional Benefits of Low-e WindowsAdditional Benefits of Low-e Windows
 Reduced cooling load needs smaller HVAC systemReduced cooling load needs smaller HVAC system
 Smaller HVAC system means lower air-flows, andSmaller HVAC system means lower air-flows, and
simpler pressure balancingsimpler pressure balancing
 By being more closely matched to both peak and non-By being more closely matched to both peak and non-
peak cooling loads better dehumidification is achievedpeak cooling loads better dehumidification is achieved
 (Improves IAQ and inhibits mold growth)(Improves IAQ and inhibits mold growth)

17. Steven Winter Associates, Inc.
HUD Energy Action Plan
HVAC OptimizationHVAC Optimization
 ““Right-Sized” HVACRight-Sized” HVAC
 Manual J with noManual J with no
oversizeoversize
 Compact designCompact design
 avoids ducts in outsideavoids ducts in outside
wallswalls
 Less opportunity forLess opportunity for
leaks and lossesleaks and losses
 Less costly to installLess costly to install
 Better able to achieveBetter able to achieve
air-flowsair-flows

18. Steven Winter Associates, Inc.
HUD Energy Action Plan
OPTIMIZED HVAC
Mercedes Homes
Townhouses
Melbourne, Florida
 Concrete and PanelizedConcrete and Panelized
ConstructionConstruction
 Low-e windowsLow-e windows
 Integrated HVACIntegrated HVAC
 AHU in Conditioned-spaceAHU in Conditioned-space
 EnergyStar QualifiedEnergyStar Qualified

19. Steven Winter Associates, Inc.
HUD Energy Action Plan
Down-Sized HVACDown-Sized HVAC
Single Zone 1.5 Ton Capacity Heatpumps
Compact Distribution
First and Second Floor Returns
Fresh-Air Duct

20. Steven Winter Associates, Inc.
HUD Energy Action Plan
OPTIMIZED HVAC COMFORT TESTING

21. Steven Winter Associates, Inc.
HUD Energy Action Plan
Tankless Gas Water-HeaterTankless Gas Water-Heater
 ECO-Block WallsECO-Block Walls
 Fly-Ash ConcreteFly-Ash Concrete
 Low-e WindowsLow-e Windows
 Integrated Compact HVACIntegrated Compact HVAC
 SEER 17 A/CSEER 17 A/C
 Tankless Water-HeaterTankless Water-Heater
and Hydro-coil AHUand Hydro-coil AHU
 HERS 95HERS 95
Madera I Model Home, Gainesville, Florida
Takagi T-KD20

22. Steven Winter Associates, Inc.
HUD Energy Action Plan
Cost and BenefitsCost and Benefits
 Saves Space: Much smaller than a storage tankSaves Space: Much smaller than a storage tank
 Saves Energy: Stand-by losses are eliminated.Saves Energy: Stand-by losses are eliminated.
Operating efficiency improves by 30% to 40%Operating efficiency improves by 30% to 40%
 Saves Energy: For space heating, .84 AFUE isSaves Energy: For space heating, .84 AFUE is
higher than standard furnace at .80 AFUEhigher than standard furnace at .80 AFUE
 Incremental cost increase is about $600. VeryIncremental cost increase is about $600. Very
short initial pay-back, and immediate positiveshort initial pay-back, and immediate positive
cash flow.cash flow.

23. Steven Winter Associates, Inc.
HUD Energy Action Plan
Heat Pump Water HeaterHeat Pump Water Heater
 Installed in a home inInstalled in a home in
Melbourne, FloridaMelbourne, Florida
 WatterSaver IntegratedWatterSaver Integrated
HPWH by ECR International,HPWH by ECR International,
Inc. (product introduced FallInc. (product introduced Fall
2002)2002)
 Monitoring began in AprilMonitoring began in April
20022002
 3-person household (2 adults3-person household (2 adults
& toddler)& toddler)

24. Steven Winter Associates, Inc.
HUD Energy Action Plan
Preliminary FindingsPreliminary Findings
 Reliable PerformanceReliable Performance
 Homeowners veryHomeowners very
pleasedpleased
 62% kWh savings62% kWh savings
 $10/month savings at$10/month savings at
local electric rates oflocal electric rates of
$.077/kWh$.077/kWh

25. Steven Winter Associates, Inc.
HUD Energy Action Plan
Energy-Efficient Lighting, Appliances, and ControlsEnergy-Efficient Lighting, Appliances, and Controls
Takoma Village, Washington, DC

26. Steven Winter Associates, Inc.
HUD Energy Action Plan
Takoma VillageTakoma Village
Washington, D.CWashington, D.C..
 Other Sustainable FeaturesOther Sustainable Features
 Energy Efficient LightingEnergy Efficient Lighting
 Low-VOC Paints and FinishesLow-VOC Paints and Finishes
 Fiber-Cement SidingFiber-Cement Siding
 Recycled-Content CarpetsRecycled-Content Carpets
 Horizontal-Axis Clothes WasherHorizontal-Axis Clothes Washer
 Tubular SkylightsTubular Skylights

27. Steven Winter Associates, Inc.
HUD Energy Action Plan
Putting It All TogetherPutting It All Together
Warwick Grove,Warwick Grove,
Warwick, NYWarwick, NY

28. Steven Winter Associates, Inc.
HUD Energy Action Plan
Putting It All TogetherPutting It All Together
 Advanced FramingAdvanced Framing
 Unvented CrawlspaceUnvented Crawlspace
 Low-E WindowsLow-E Windows
 Optimized HVACOptimized HVAC
 92% Condensing Furnace92% Condensing Furnace
 13 SEER Air-Conditioning13 SEER Air-Conditioning
 Tankless Gas Water-HeaterTankless Gas Water-Heater
 EnergyStar AppliancesEnergyStar Appliances
 HERS 89 -90!HERS 89 -90!